diff --git a/osu.Game.Rulesets.Karaoke/KaraokeEditInputManager.cs b/osu.Game.Rulesets.Karaoke/KaraokeEditInputManager.cs
index 17089828d..73e5ebd67 100644
--- a/osu.Game.Rulesets.Karaoke/KaraokeEditInputManager.cs
+++ b/osu.Game.Rulesets.Karaoke/KaraokeEditInputManager.cs
@@ -99,4 +99,11 @@ public enum KaraokeEditAction
 
     [Description("Clear time")]
     ClearTime,
+
+    // Action for compose mode.
+    [Description("Increase font size.")]
+    IncreasePreviewFontSize,
+
+    [Description("Decrease font size.")]
+    DecreasePreviewFontSize,
 }
diff --git a/osu.Game.Rulesets.Karaoke/KaraokeRuleset.cs b/osu.Game.Rulesets.Karaoke/KaraokeRuleset.cs
index 424c6843c..e2805d34c 100644
--- a/osu.Game.Rulesets.Karaoke/KaraokeRuleset.cs
+++ b/osu.Game.Rulesets.Karaoke/KaraokeRuleset.cs
@@ -121,6 +121,10 @@ public override IEnumerable<KeyBinding> GetDefaultKeyBindings(int variant = 0) =
                 new KeyBinding(InputKey.S, KaraokeEditAction.RemoveEndTimeTag),
                 new KeyBinding(InputKey.Enter, KaraokeEditAction.SetTime),
                 new KeyBinding(InputKey.BackSpace, KaraokeEditAction.ClearTime),
+
+                // Action for compose mode.
+                new KeyBinding(new[] { InputKey.Control, InputKey.Plus }, KaraokeEditAction.IncreasePreviewFontSize),
+                new KeyBinding(new[] { InputKey.Control, InputKey.Minus }, KaraokeEditAction.DecreasePreviewFontSize),
             },
             _ => Array.Empty<KeyBinding>(),
         };